*Please note: We make our stuff sacs big enough to allow fairly easy stuffing rather than reducing the bag to the tightest minimum.

†Please note: For all length and width options we change the amount of downfill to keep the warmth (TOT) the same.

Description

It's called the Filler Bag because that's what it was primarily designed for, to fill the space inside your ordinary bag, providing significant extra warmth at the lowest possible weight.

This sale version is £75 less than our standard Filler Bag.

Our Minim Overbag and Hispar Overbag bags perform really well as overbags, adding their insulation on the outside. The beauty of the Filler concept is that it works from inside, softly expanding into the unused space and cutting out the convection currents. The result is a much lighter 'combi', less than a third the weight of our external Combis and a quarter of the bulk.

Does it really work?

Yes, it does. When the temperature's dipping too low for your Ultra K or Minimus bag, you'll find this little extra will shift the shivers. Of course it's not as warm as the external Combis, which will add about 20°C to the temperature rating of your bag. The Filler can add up to 10°C, putting it squarely in the frame for ultralight camping beyond the summer season. It's aimed at boosting lightweight bags, but of course it will work inside any bag anywhere.

Is it comfortable?

Yes, it's as wide as our standard ultralight bags, so there's no feeling of restriction, and it's so soft that it will naturally fill those empty spaces around you. And there certainly are spaces, even in slim-cut bags: few of us would accept the straight-jacket effect of a truly body-fitting bag. The Filler bag offers the best of both worlds: you keep the freedom to move and you get rid of those cold spaces at the same time.

Materials

For this sale we are using 900 fillpower down and our M1 fabric. The unique piece of kit we ended up with weighs just 310gm and goes into our size 0 stuff sac (10 x 18 cm).

Solo Use

Just coming back to where we started, using the Filler as a single sleeping bag. It's shoulder length (closes at the neck), so you'll need some kind of head cover. And what you're wearing inside will make a big difference to the temperature rating.

Dispatch time: As with most PHD products, these are made to order and by hand. We estimate it will take us around 20 working days to make and dispatch sale orders. During busy periods it may take a little longer.

Need a filler faster? Check out the 'Ready Made' version, which ships within 5 working days.

Technical

Lightweight M1 fabric (weight: 39 gsm)

Lightweight silky microfibre. This close-weave 20 denier fabric is fully downproof, but also light and flexible enough to allow the down full loft. A reliable performer that has been the basis for much of our lightweight gear for some time. Order samples of this fabric & just pay the postage.

900 Fillpower Down

European goose down of very high quality. A truly excellent down with large clusters, consistent quality and lively long-term performance. More on our down insulation.

Sizing

Lightweight Sleeping Bags Sizes

The measurements in the tables below are personal body measurements.

Length

Height

Short

168cm and below (5' 6" and below)

Standard

169 - 184cm (5' 7" - 6')

Long

185 - 201cm (6' 1" - 6' 7")

Extra Long

202 - 213cm (6' 8" - 7')

Width

Chest

Slim

78 - 92cm (31" - 36")

Standard

93 - 107cm (37" - 42")

Wide

108 - 125cm (43" - 49")

Extra Wide

126 - 142cm (50" - 56")

Reviews

Reviews relate to our standard Filler bag

"A genius idea" —
Trail Running Magazine

"I have a long-held belief in the 'layering principle' extending into sleeping bags. PHD's bags suit a multitude of adventure activity situations including:

Expedition sea kayaking

Himalayan style trekking where you travel through a wide range of temperature zones

Cycle touring where there is a similar packing issue to sea kayaking and potential for travelling through temperature zones

Plus, anyone who needs to use their sleeping bag across seasons. E.g. Just 'layer up' to convert your summer bag into a 'winter warmer'

During recent sea kayak expeditions in Greenland, my PHD Minim Overbag, Minimus, and Filler bags were tested in temperatures ranging from just above freezing to as low as -10°C. It is a pleasure, when you know the temperature is dropping, just to slip into another bag and double the warmth factor" —
Sam Cook

""I 'bivvied' in the snow on the fell above my house. Inside a bivvy bag I was as 'snug as a bug' in the Minim Overbag and Filler. So much so that I slept until 8am. The temperature dropped to about -6°C."—
S.C.

"I used the Filler Bag in the Alps with great success. I happily slept in it, albeit with a vest and hat on, at temperatures down to around 12 degrees C and was perfectly comfortable. Saved a lot of pack weight. Thanks for a great product, the down you use is obviously of a very high quality."— Mike Jones.

"PHD has reminded us once again why it is one of the world's best manufacturers of lightweight gear with the release of its super-light 240g Filler Bag. When used inside a sleeping bag, the Filler is designed to expand in the unused space and cut off convection currents to add 10C of warmth. It can be compressed into an impressively small size zero PHD stuff sac (10x18cm)." —
TGO Magazine.

Features

£75 less than our standard Filler Bag

Neck-length bag

Fits inside main bag to boost warmth. Or an ultralight summer bag by itself

*Please note: We make our stuff sacs big enough to allow fairly easy stuffing rather than reducing the bag to the tightest minimum.

†Please note: For all length and width options we change the amount of downfill to keep the warmth (TOT) the same.

Description

It's called the Filler Bag because that's what it was primarily designed for, to fill the space inside your ordinary bag, providing significant extra warmth at the lowest possible weight.

This sale version is £75 less than our standard Filler Bag.

Our Minim Overbag and Hispar Overbag bags perform really well as overbags, adding their insulation on the outside. The beauty of the Filler concept is that it works from inside, softly expanding into the unused space and cutting out the convection currents. The result is a much lighter 'combi', less than a third the weight of our external Combis and a quarter of the bulk.

Does it really work?

Yes, it does. When the temperature's dipping too low for your Ultra K or Minimus bag, you'll find this little extra will shift the shivers. Of course it's not as warm as the external Combis, which will add about 20°C to the temperature rating of your bag. The Filler can add up to 10°C, putting it squarely in the frame for ultralight camping beyond the summer season. It's aimed at boosting lightweight bags, but of course it will work inside any bag anywhere.

Is it comfortable?

Yes, it's as wide as our standard ultralight bags, so there's no feeling of restriction, and it's so soft that it will naturally fill those empty spaces around you. And there certainly are spaces, even in slim-cut bags: few of us would accept the straight-jacket effect of a truly body-fitting bag. The Filler bag offers the best of both worlds: you keep the freedom to move and you get rid of those cold spaces at the same time.

Materials

For this sale we are using 900 fillpower down and our M1 fabric. The unique piece of kit we ended up with weighs just 310gm and goes into our size 0 stuff sac (10 x 18 cm).

Solo Use

Just coming back to where we started, using the Filler as a single sleeping bag. It's shoulder length (closes at the neck), so you'll need some kind of head cover. And what you're wearing inside will make a big difference to the temperature rating.

Dispatch time: As with most PHD products, these are made to order and by hand. We estimate it will take us around 20 working days to make and dispatch sale orders. During busy periods it may take a little longer.

Need a filler faster? Check out the 'Ready Made' version, which ships within 5 working days.

Technical

Lightweight M1 fabric (weight: 39 gsm)

Lightweight silky microfibre. This close-weave 20 denier fabric is fully downproof, but also light and flexible enough to allow the down full loft. A reliable performer that has been the basis for much of our lightweight gear for some time. Order samples of this fabric & just pay the postage.

900 Fillpower Down

European goose down of very high quality. A truly excellent down with large clusters, consistent quality and lively long-term performance. More on our down insulation.

Sizing

Lightweight Sleeping Bags Sizes

The measurements in the tables below are personal body measurements.

Length

Height

Short

168cm and below (5' 6" and below)

Standard

169 - 184cm (5' 7" - 6')

Long

185 - 201cm (6' 1" - 6' 7")

Extra Long

202 - 213cm (6' 8" - 7')

Width

Chest

Slim

78 - 92cm (31" - 36")

Standard

93 - 107cm (37" - 42")

Wide

108 - 125cm (43" - 49")

Extra Wide

126 - 142cm (50" - 56")

Reviews

Reviews relate to our standard Filler bag

"A genius idea" —
Trail Running Magazine

"I have a long-held belief in the 'layering principle' extending into sleeping bags. PHD's bags suit a multitude of adventure activity situations including:

Expedition sea kayaking

Himalayan style trekking where you travel through a wide range of temperature zones

Cycle touring where there is a similar packing issue to sea kayaking and potential for travelling through temperature zones

Plus, anyone who needs to use their sleeping bag across seasons. E.g. Just 'layer up' to convert your summer bag into a 'winter warmer'

During recent sea kayak expeditions in Greenland, my PHD Minim Overbag, Minimus, and Filler bags were tested in temperatures ranging from just above freezing to as low as -10°C. It is a pleasure, when you know the temperature is dropping, just to slip into another bag and double the warmth factor" —
Sam Cook

""I 'bivvied' in the snow on the fell above my house. Inside a bivvy bag I was as 'snug as a bug' in the Minim Overbag and Filler. So much so that I slept until 8am. The temperature dropped to about -6°C."—
S.C.

"I used the Filler Bag in the Alps with great success. I happily slept in it, albeit with a vest and hat on, at temperatures down to around 12 degrees C and was perfectly comfortable. Saved a lot of pack weight. Thanks for a great product, the down you use is obviously of a very high quality."— Mike Jones.

"PHD has reminded us once again why it is one of the world's best manufacturers of lightweight gear with the release of its super-light 240g Filler Bag. When used inside a sleeping bag, the Filler is designed to expand in the unused space and cut off convection currents to add 10C of warmth. It can be compressed into an impressively small size zero PHD stuff sac (10x18cm)." —
TGO Magazine.